Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 9 km 58 m = ______ cm
- 5 km 7 m = ______ m
- 8 km 637 m = _______ m
- 2 km 3 m 7 cm = _______ cm
(a)
1 km = 100000 cm
1 m = 100 cm
9 km 58 m
= 9 x 100000 + 58 x 100
= 900000 + 5800
= 905800 cm
(b)
1 km = 1000 m
5 km 7 m
= 5 x 1000 + 7
= 5000 + 7
= 5007 m
(c)
1 km = 1000 m
8 km 637 m
= 8 x 1000 + 637
= 8000 + 637
= 8637 m
(d)
1 km = 100000 cm
1 m = 100 cm
2 km 3 m 7 cm
= 2 x 100000 + 3 x 100 + 7
= 200000 + 300 + 7
= 200307 cm
Answer(s): 905800, 5007, 8637, 200307